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Reading Paper Tapes in 2022

I have a couple of old paper tapes – I also have an ASR33 teletype, which is more than capable of reading a tape, but making the ASR33 operate correctly is a labor of love which I will…

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My IMSAI is alive!!

It’s been an epic week. I got my IMSAI S100 system running. I replaced the 120v linear power supply with a couple of modern switchers – now the system is sooo much lighter, and I can plug it…

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Blowing up a Yaesu FT-891

Some posts should never need to be written. Here is one of them. I spent the weekend installing my FT-891 into the car – Radio under the passengers front seat, control head onto the dash, and new FC-40…

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Modern radios get shredded.

Or why we can’t have nice things…. I have always had a soft spot for military hardware – from an era when I was much younger where I got to work on beautifully constructed electronics that was designed…

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Using the FCC to your advantage in identifying radio gear

Often I will find myself needing information about electronics where there is apparently no service information available on the web. This is where FCC processes become extremely handy. Let me introduce to you the FCC approvals database. Lets…

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Spectral purity of Baofeng radios

One topic that is fascinating to watch rolling round on Facebook is the reactions of the crowd who hate the inexpensively made Baofeng radios. People talk about how you will set off all the repeaters in range on…

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Interconnectivity where it is not expected

I was actively involved in packet radio here in Canberra in the 80’s and 90’s. Great stuff, and a ton of fun. We had a core group of probably 10 -15 people here who were active. I did…

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Evolution of a simple PCB for Eurorack power control

As it would turn out, Amateur radio is a hobby pursued by many people who are interested in Electronics. I have always had a fascination for all things electrical in nature, and have spent my whole life making gadgets.

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Using the USB ATTiny 85 boards

I have always loved the Arduino universe. I started originally with Microchip PIC devices, but once I discovered Arduino, my world changed :-). For the last year or so, I have been playing with a tiny board that…

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The world of Raspberry Pi Clusters

(or – how to chuck a heap of computers into a small space… to do SDR functions.) So – One of my fellow Ham operators here in Canberra, Wade (VK1MIC) showed me a photo of his cluster of…

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